Unable to refresh the statistics: the server responded with 500 (Internal Server Error)

Tags: #<Tag:0x00007efd245c2150> #<Tag:0x00007efd245c1fc0>

Hi, I am getting error in my PPD server but working on local and Dev.
Any suggestion what is wrong with this?

Unable to refresh the statistics: the server responded with 500 (Internal Server Error). Try reloading the page manually, or wait for automatic reload that will happen in a minute.